// ============================================================================
//
// Copyright (C) 2006-2007 Dengues
//
// Google Group: http://groups.google.com/group/dengues
// QQ Group: 24885404
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// ============================================================================
package org.dengues.designer.ui.process.commands;

import org.dengues.designer.ui.editors.AbstractGEFCommand;
import org.dengues.designer.ui.i18n.Messages;
import org.dengues.designer.ui.process.models.CompBlock;
import org.dengues.designer.ui.process.models.CompProcess;
import org.eclipse.draw2d.geometry.Rectangle;

/**
 * Qiang.Zhang.Adolf@gmail.com class global comment. Detailled comment <br/>
 * 
 * $Id: Dengues.epf Qiang.Zhang.Adolf@gmail.com 2008-7-17 qiang.zhang $
 * 
 */
public class CompBlockCreateCommand extends AbstractGEFCommand {

    private final CompProcess process;

    private final CompBlock newNote;

    private final Rectangle constraint;

    private CompBlock oldNote;

    /**
     * Qiang.Zhang.Adolf@gmail.com CompBlockCreateCommand constructor comment.
     * 
     * @param process
     * @param block
     * @param constraint
     */
    public CompBlockCreateCommand(CompProcess process, CompBlock block, Rectangle constraint) {
        setLabel(Messages.getString("CompBlockCreateCommand.create")); //$NON-NLS-1$
        this.constraint = constraint;
        this.newNote = block;
        this.process = process;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.gef.commands.Command#execute()
     */
    @Override
    public void execute() {
        if (newNote.equals(oldNote)) {
            return;
        }
        newNote.setLocation(constraint.getLocation());
        process.addCompBlock(newNote);
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.gef.commands.Command#undo()
     */
    @Override
    public void undo() {
        process.removeCompBlock(newNote);
    }
}
